Bug 508255 - blackscreen after Mask Apply
Summary: blackscreen after Mask Apply
Status: RESOLVED WORKSFORME
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Effects & Transitions (other bugs)
Version First Reported In: 25.04.3
Platform: Microsoft Windows Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords: triaged
Depends on:
Blocks:
 
Reported: 2025-08-14 17:10 UTC by kdesomeuser
Modified: 2025-09-15 02:42 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:


Attachments
clip properties and project sttings (146.50 KB, image/png)
2025-08-14 17:12 UTC, kdesomeuser
Details
screenshot (110.28 KB, image/png)
2025-08-14 17:15 UTC, kdesomeuser
Details

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Description kdesomeuser 2025-08-14 17:10:40 UTC
effect stack:

- Secondary Color Correction Area Selection (Mask)
- Vertigo 
- Curves 
- Mask Apply

result: blackscreen in Project Monitor
Comment 1 kdesomeuser 2025-08-14 17:12:31 UTC
Created attachment 184083 [details]
clip properties and project sttings
Comment 2 kdesomeuser 2025-08-14 17:15:46 UTC
Created attachment 184084 [details]
screenshot

for some reason the screenshot was not attached in the main bug form
Comment 3 Bernd 2025-08-14 17:56:18 UTC
Please reset the Curves effect and check whether this brings back the clip in the project monitor.
Then move the horizontal divider to make the effect stack bigger so that the curves graph is displayed completely. In order to control the intensity of the effect before curves you need to just move the bottom left-hand point of the curve up (and just up and not right and up).
Comment 4 kdesomeuser 2025-08-14 21:47:27 UTC
(In reply to Bernd from comment #3)
> Please reset the Curves effect and check whether this brings back the clip
> in the project monitor.
> Then move the horizontal divider to make the effect stack bigger so that the
> curves graph is displayed completely. In order to control the intensity of
> the effect before curves you need to just move the bottom left-hand point of
> the curve up (and just up and not right and up).

using a Windows "Scale and layout" setting (https://bugs.kde.org/show_bug.cgi?id=508258) - temporarily returned the lower node. But it seems that the situation does not change. Could you check the screencast, please: https://drive.google.com/file/d/1RhKmpfSfN0VNw02ieluCCBwubAjzDM7E/view?usp=drive_link

I also attach project and videotrack: https://drive.google.com/drive/folders/1bs_t-gyhhxfrL1k0uIhcPFIYFtGQ9GG1?usp=sharing
Comment 5 Bug Janitor Service 2025-08-29 03:47:51 UTC
๐Ÿ›๐Ÿงน โš ๏ธ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!
Comment 6 kdesomeuser 2025-09-15 02:42:18 UTC
at v25.08.0 the problem is gone.